Interlaken Ice Cream Dash

08/04/2026

5k & 10k

Tuesday, August 4, 2026

6:30pm Start

Interlaken Park, Seattle, WA

The fifty-one acres of dense forest that separate the urban neighborhoods of Montlake and Capitol Hill comprise Interlaken Park, named for a summer resort in Switzerland. Here you’ll find towering trees, an enchanting collection of dirt trails and a tree-canopied, wide, paved road that’s closed to motorized traffic and served as the principal bicycle and buggy path in the 1890s. Bicyclists still enjoy this quiet path as part of their city commutes today.

At Interlaken Ice Cream Dash the race begins with a smooth out-and-back on the historic road, then turns quickly upward and onto the forest trails. There are a few steep pitches that will tax your quads, and a sustained climb before you turn around to sail back down through the trees. Those who fancy themselves strong downhill runners may catch the climbers on the descent! Then catch your breath on the silky smooth pavement, because each lap is 2.5k and 5k runners run it twice, while 10k runners run it four times. The climb will leave you puffing, the descent will be thrilling, and when it’s all over, you’ll have one serious endorphin high. Come discover the refreshing power of this green enclave!

2026 TUESDAY NIGHT TRAIL TO GRILL SERIES PRESENTED BY OISELLE

MAY 26 – RAVENNA RUN THE RAVINE
4k, 8k, 12k, Ravenna Park, Seattle, WA

JUNE 9 – WOODLAND PARK ZOOM
5k & 10k, Woodland Park, Seattle, WA

JUNE 23 – CARKEEK WARMER
5k & 10k, Carkeek Park, Seattle, WA

JULY 7 – SEWARD SIZZLER
4.2 mile & 10k, Seward Park, Seattle, WA

JULY 21 – SUMMER EDDY
4 mile & 8 mile, St. Edward State Park, Kenmore, WA

AUGUST 4 – INTERLAKEN ICE CREAM DASH
5k & 10k, Interlaken Park, Seattle, WA

Motivated by swag?

Consistency pays off! Participate in 4 or more Tuesday Night Trail to Grill Series events and you’ll earn a super cool customized hat to commemorate your accomplishment.

The Tuesday Night Trail to Grill Series Presented by Oiselle!

Thanks to Athletic Brewing Co. for quenching runners’ thirst needs for the series!

Registration
Results & Photos
Schedule
Course Description
Directions & Parking
Hot Dogs, Watermelon, & More!
Apparel
Safety, Etiquette & Dogs

Registration

	Open (through 3/16)	Early (through 7/8)	Regular (through 8/3)	Day-of-Event*
5k	28.00	31.00	34.00	40.00
10k	32.00	36.00	39.00	45.00

Use the red button on the left to register for multiple Tuesday Night Trail to Grill series runs, or use the green button on the right to register only for this run.

Online pre-registration closes Monday, August 3 at 11:59pm. Event-day registration will be available by cash, card, or check made payable to Northwest Trail Runs.

View the registration confirmation list to verify your registration or to see who else is registered.

Youth Runner Discount

Runners in elementary, middle, or high school—any runners under age 20—are eligible to receive a 15% or $10 discount (whichever is greater) on online pre-registration prices for all Northwest Trail Runs events. The discount will be auto generated based on your date of birth.

Schedule

TUESDAY, AUGUST 4

5:30pm – Check-in and day-of-event registration opens
6:25pm – Pre-start announcements
6:30pm – Start
8:00pm – Cut-off for runners to start their last lap
8:30pm – Course closes

Photo by Somer Kreisman

Course Description

The course starts with an out-and-back tour of the fairly flat, paved Interlaken Boulevard, where it is closed to car traffic through this forest park. The course then turns up a short staircase and onto dirt trails, including a climb to the top of the park and back down to Interlaken Boulevard for the short return to the start/finish. Each loop is 2.5 km. The 5k is two loops, and the 10k is four loops.

View a PDF of the course map here.

Aid Station
The aid station is located at the start/finish. 5k runners will pass the station halfway through their race (2.5k) as they begin their second loop. 10k runners will pass the aid station at 2.5k, 5k, and 7.5k.

Aid stations offer water, electrolyte drink Skratch Labs hydration sport drinks, and some carbohydrate-rich or salty foods, such as cookies, pieces of energy bar, gels, chews, chips, bagel, fruity candy, fig bars, peanut butter and jelly sandwiches, and/or bananas.

Photo by Somer Kreisman

Directions & Parking

Interlaken Park divides the Montlake and Capitol Hill neighborhoods of Seattle. The event will begin near the intersection of 21st Ave E and E Interlaken Blvd. Street parking is available adjacent to check-in and the start/finish point.

Google Map

IMPORTANT
Weekday evening traffic can often be very busy in the Seattle metropolitan area and the beautiful parks we host the Tuesday Night Trail to Grill Series at can get very busy, particularly on sunny days. As such, we recommend you allow yourself extra time for travel and finding parking on race evening.

Hot Dogs, Watermelon, & More!

Make sure to stick around after your race for hot dogs, veggie dogs, watermelon, and other yummy snacks. We will present awards for the top 3 Female and Open category finishers in each distance, and we’ll raffle off fun prizes, so you might win something just by showing up!

…and of course, we’ll be serving ICE CREAM!

Photo by Agustin Sanchez

Apparel

Add 2026 Northwest Trail Runs Apparel to your race registration and pick up your apparel at the event, or check out what we have at the event and purchase there.

$25 + tax – short sleeve tech shirts, in unisex, women’s cuts & youth

$30 + tax – long sleeve tech shirts, in unisex and women’s cut

$35 + tax – cotton hoodie, unisex

Safety, Etiquette & Dogs

GENERAL SAFETY
The trails will be open to other users during the event, including pedestrians with pets, and cyclists. Participants are responsible for their own safety while participating, and the organizers are neither qualified nor equipped to render medical care in the event of a serious injury. In case of an emergency, call 9-1-1. You are encouraged to bring a cell phone with you as a safety precaution, if you wish.

PASSING ETIQUETTE
Where the trails are narrow, please let other participants pass you if they want to get by. It is a passing runner’s job to tell the person in front that they wish to pass.

HEADPHONES
If you’d like to listen to music while you’re on the course, please use headphones or earbuds, so that runners around you can’t hear it. Others may prefer a quieter event experience or may have different musical tastes. Runners playing music in the open air may be asked to leave the event.

Also, keep the volume low enough that you can hear someone talking to you in a normal voice, for example, another runner saying they would like to pass on your left.

DOGS
Our events are USATF sanctioned and subject to USATF policies, and so dogs are not allowed to accompany runners on the course.